| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal polyimide composite material which has excellent adhesiveness to metals without intervening an adhesive layer and has the same polyimide linear thermal expansion coefficient as that of a metal, and to provide a polyamic acid varnish composition giving the same. SOLUTION: This polyamic acid varnish composition is obtained by adding a vinyltriazine compound to a polyamic acid varnish comprising a solvent and a polyamic acid obtained by the addition polymerization of an aromatic tetracarboxylic acid dianhydride to an aromatic diamine. COPYRIGHT: (C)2007,JPO&INPIT
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